One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,4)(3,7,8,6)(9,10)(11,13)(12,14)(15,16)(17,18,19,26,21,25,22,23)(20,28,30,24,29,31,27,32)(1,3)(2,6)(4,7)(5,8)(9,10)(11,15)(12,14)(13,16)(17,19,21,22)(18,23,25,26)(20,27,29,30)(24,31,32,28)(1,4,5,2)(3,7,8,6)(9,11)(10,13)(12,16)(14,15)(17,20,21,29)(18,24,25,32)(19,27,22,30)(23,31,26,28)(3,8)(6,7)(11,16)(13,15)(18,25)(23,26)(24,32)(28,31) involution — undirected(10,14)(13,15)(17,19,21,22)(18,26,25,23)(20,27,29,30)(24,28,32,31)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.